/*****************************************************

*

* 函數名稱： void DrawcvMat(cv::Mat m_cvImg, UINT ID)

* 函數功能： 在picture control中顯示圖像，設置Freame或者rectangle都可以

*

* ****************************************************/

void CMFC_showImageDemoDlg::DrawcvMat(cv::Mat m_cvImg, UINT ID)

{

cv::Mat img;

CRect rect;

GetDlgItem(ID)->GetClientRect(&rect);

if (rect.Width()%4 != 0)

{

rect.SetRect(rect.left, rect.top, rect.left + (rect.Width() + 3) / 4 * 4, rect.bottom); //調整圖像寬度為4的倍數

GetDlgItem(ID)->SetWindowPos(NULL, rect.left, rect.top, rect.Width(), rect.Height(), SWP_NOMOVE);

}

cv::Rect dst(rect.left, rect.top, rect.right, rect.bottom);

cv::resize(m_cvImg, img, cv::Size(rect.Width(), rect.Height())); //使圖像適應控件大小

unsigned int m_buffer[sizeof(BITMAPINFOHEADER) + sizeof(RGBQUAD)*256];

BITMAPINFO* m_bmi = (BITMAPINFO*) m_buffer;

BITMAPINFOHEADER* m_bmih = &(m_bmi->bmiHeader);

memset(m_bmih, 0, sizeof(*m_bmih));

m_bmih->biSize = sizeof(BITMAPINFOHEADER);

m_bmih->biWidth = img.cols; //必須為4的倍數

m_bmih->biHeight = -img.rows; //在自下而上的位圖中 高度為負

m_bmih->biPlanes = 1;

m_bmih->biCompression = BI_RGB;

m_bmih->biBitCount = 8 * img.channels();

if (img.channels() == 1) //當圖像為灰度圖像時需要設置調色板顏色

{

for (int i = 0; i < 256; i++)

{

m_bmi->bmiColors[i].rgbBlue = i;

m_bmi->bmiColors[i].rgbGreen = i;

m_bmi->bmiColors[i].rgbRed = i;

m_bmi->bmiColors[i].rgbReserved = 0;

}

}

CDC *pDC = GetDlgItem(ID)->GetDC();

::StretchDIBits( pDC->GetSafeHdc(), 0, 0, rect.Width(), rect.Height(), 0, 0, rect.Width(), rect.Height(), img.data, (BITMAPINFO*) m_bmi, DIB_RGB_COLORS, SRCCOPY );

ReleaseDC(pDC);

}